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基于共存理论建立钒渣活度计算模型,研究含钒铁水提钒同时脱磷而加入的Ca O对提钒及脱磷带来的影响。渣铁平衡试验结果表明在低碱度(R<1)时,钒和磷的分配比计算值和试验值吻合较好,回归分析得到了提钒率DV和脱磷率DP的关系:DV=72.43+0.79DP。模型对转炉钒渣的计算结果表明碱度升高增大磷和钒在渣金间的分配比,其中对磷的增大更加明显;温度的升高不利于提钒,但在低碱度(R<1)时有利于脱磷;碱度的升高对渣中其它组分的影响表现为使Fe O、Mn O的活度和活度系数下降,Si O2、Ti O2的活度和活度系数上升。
Based on the coexistence theory, a calculation model of vanadium slag activity was established to study the effect of adding CaO to vanadium extraction and dephosphorization when vanadium was added to vanadium-bearing molten iron at the same time. The slag-iron balance test results show that the distribution of vanadium and phosphorus is in good agreement with the calculated value and the experimental value at low alkalinity (R <1). The relationship between the vanadium extraction rate DP and DP of the vanadium extraction rate is obtained by regression analysis. DV = 72.43 + 0.79DP. The calculation results of vanadium slag on converter indicate that the increase of alkalinity increases the distribution ratio of phosphorus and vanadium in slag and gold, and the increase of phosphorus is more obvious. The increase of temperature is unfavorable to the extraction of vanadium, R <1) is favorable for dephosphorization. The effect of alkalinity increase on other components in the slag is that the activity and activity coefficients of FeO, MnO decrease, the activities and activities of Si O2, Ti O2 Degree coefficient rises.